One Punch Man Reputation System

In the quiet night of the night, why do female fans often knock on the door of Saitama's house? Why did the King, the strongest man on the planet, get so angry that he killed fifty people and hung up, complaining that his teammates were unable to carry him away? Is all this a distortion of human nature or a loss of morality? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.